Granted Patent
Utility
US 4,802,154 · App. 06/714,585
High density codes for optical recording
Inventors:
Johannes J. Verboom, Christiaan Steenbergen
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Mar 21, 1985
Inventors
Johannes J. Verboom
Christiaan Steenbergen
Assignee (at issue)
Laser Magnetic Storage International Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.